Tuesday, February 23, 2010

concrete vs. cement

Cement is a binder, a substance which sets and hardens independently, and can bind other materials together.

Concrete
is a construction material composed of cement (commonly Portland cement) as well as other cementitious materials such as fly ash and slag cement, aggregate (generally a coarse aggregate such as gravel, limestone, orgranite, plus a fine aggregate such as sand), water, and chemical admixtures.

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